Current storage device for electronic equipment e.g. notebook computer has voltage converter that transforms electricity supplied through switch unit to electronic equipment, and which is controllable by processing unit

摘要

A voltage application unit (604) generates an output voltage whose level can be adjusted. A processing unit (603) receives direct current and the output voltage from the voltage application unit, executes arithmetic and comparison operations and permits changeover between the switch units (601,602). A charging circuit (608) receives the direct current and charges a battery (605). A voltage converter (607) is controllable by the processing unit to convert electricity supplied to an electronic equipment (40) through the switch unit (602).